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The magnetic energy stored in an inductor of inductance 4 μH carrying a current of 2 A is

Asked in NEET 2023 · Energy stored in an inductor

Answer: (3) 8 μJ

Step-by-step solution

The energy stored in an inductor is U=1/2LI².

U=1/2×4×10⁻⁶×2²=1/2×4×10⁻⁶×4=8×10⁻⁶ J.

That is 8 μJ.

Two of the options quote millijoules, which would need an inductance in millihenry.

Why the other options are wrong

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